On some Lomechusini of the Palaearctic and Oriental regions (Coleoptera: Staphylinidae: Aleocharinae) Author Assing, Volker text Beiträge Zur Entomologie = Contributions to Entomology 2016 2016-12-20 66 1 13 111 https://www.contributions-to-entomology.org/article/view/1904 journal article 2419 10.21248/contrib.entomol.66.1.13-111 d2933fad-1cac-4a5a-a558-2633f8314541 0005-805X 6421171 Orphnebius fusicollis spec. nov. ( Figs 11 , 46–47 , 263–268 ) Type material : Holotype ♂ : “ Lao-NE , Hua Phan prov ., 20°12'N 104°01'E , Phu Phan Mt. , ~ 1750 m , 17.v.–3.vi. 2008 , Vít Kubáň leg. / Holotypus ♂ Orphnebius fusicollis sp. n. , det. V. Assing 2015” ( NHMB ). Paratypes : 6 ♂♂ , 1 ♀ : same data as holotype ( NHMB , cAss) . Etymology : The specific epithet (Latin, adjective; from fusus: broad) alludes to the strongly transverse pronotum. Description : Body length 3.4–4.2 mm ; length of forebody 1.4–1.6 mm . Coloration: forebody blackish; abdomen reddish, with the anterior half of tergite VII usually slightly darker; legs with dark-reddish to darkbrown femora and reddish tibiae and tarsi; antennae dark-brown with antennomeres I–III and the apex of XI reddish, and antennomere IV reddish-brown; maxillary palpi reddish with yellowish terminal palpomere. Head ( Fig. 46 ) strongly transverse, 1.35–1.40 times as broad as long, posteriorly distinctly angled in lateral view ( Fig. 47 ), posterior margin of dorsal surface convex in dorsal view; punctation of lateral portions fine and very sparse; pubescence pale and long; median dorsal portion extensively impunctate; interstices without microsculpture. Eyes large, reaching posterior margin, and strongly bulging. Antenna ( Fig. 11 ) 1.1–1.2 mm long, moderately incrassate, and symmetric; antennomeres III and IV flattened, V–X of distinctly conical shape, IV–X weakly transverse, X distinctly longer than IX, and XI elongate, approximately as long as the combined length of VIII–X. Pronotum ( Fig. 46 ) large and strongly transverse, approximately 1.45 times as broad as long and 1.3 times as broad as head, moderately convex in cross-section; posterior angles very weakly marked, nearly obsolete; disc with an indistinct median pair of punctures, otherwise nearly impunctate; lateral margins each with three long and erect black setae. Elytra ( Fig. 46 ) nearly as long as pronotum; suture gaping posteriorly; punctation sparse and very fine; pubescence long and pale, depressed to sub-erect. Hind wings fully developed. Legs relatively short; metatarsomere I shorter than the combined length of II and III. Abdomen: paratergites strongly elevated and sharply edged; tergites III–VI each with a lateral setiferous puncture on either side and with four setiferous punctures at posterior margin (individual punctures occasionally missing); tergite VII with non-setiferous punctation across middle, without such punctation in anterior and posterior portions, and with a transverse row of setiferous punctures near posterior margin, posterior margin with palisade fringe; tergite VIII ( Fig. 266 ) with two transverse rows of black setae posteriorly and with strongly convex posterior margin; sternite VIII with strongly convex posterior margin; both tergite and sternite VIII with dense and fine gland openings on whole surface ( Fig. 267 ). ♂ : hemi-tergites IX and tergite X with extremely dense and long pubescence ( O. hauseri type ); median lobe of aedeagus ( Figs 263–264 ) approximately 0.65 mm long; ventral process distinctly curved in lateral view; internal sac with large sclerotized structures; paramere ( Fig. 267 ) approximately 0.45 mm long, with slender paramerite and stout, apically weakly convex condylite. ♀ : spermatheca ( Fig. 268 ) of conspicuous shape, but not distinctive. Comparative notes : As is suggested by the similar shape of the antennae and the similar general morphology of the aedeagus, O. fusicollis is closely allied to O. conicornis from China , from which it differs by distinctly darker coloration of the forebody, the legs, and the antennae, by the longer antennae with much less transverse antennomeres V–X and a more elongate antennomere XI, a pronotum with at least weakly marked posterior angles and with three long black setae at the lateral margins ( O. conicornis : posterior angles obsolete; lateral margins each with four brown setae), a smoothly curved ventral process of the aedeagus in lateral view (angled in O. conicornis ), and by the shape of the paramere. For illustrations of O. conicornis see ASSING (2006c) . Distribution and natural history : The type locality is situated in Hua Phan province , North Laos , at an altitude of approximately 1750 m . Orphnebius cernens , O. lunatus , O. fuscapicalis , O. spoliatus , and an unnamed species were collected in the same locality.